Omron S8VK-G12024 — 24V 5A DIN Rail Power Supply Review

By Abdullah Zahid
14 min read
Omron S8VK-G12024 120W 24VDC DIN-rail switch mode power supply for industrial control panels

Omron S8VK-G12024 Switch Mode Power Supply, 120 W, 24 VDC, DIN-rail — Specs, Review, and Buying Guide

Controls engineers specifying 24 VDC power for a PLC panel, I/O rack, or OEM machine cabinet frequently land on the Omron S8VK-G12024 as a strong candidate — and for good reason. This DIN-rail mounted switch mode power supply delivers a rated 24 VDC at 5 A continuous, totalling 120 W, from a single-phase 100–240 VAC input, all in a 40 mm-wide convection-cooled housing. Whether you are building a new panel or replacing an aging supply on an existing line, the decision checklist is the same: confirm your load, confirm your environment, and confirm your approvals.

If you have already confirmed this is the right part, check current pricing and availability at LeadTime.ca — ships worldwide.

Who Should Buy the Omron S8VK-G12024 — and Who Shouldn't

The S8VK-G12024 is the right choice for controls engineers and panel builders who need a dependable 24 VDC, 5 A DIN-rail supply for standard PLC and I/O loads, and who value Omron's reliability track record, wide operating temperature range, and straightforward DIN-rail integration.

  • Your 24 VDC continuous load, including inrush margin and temperature derating, sits comfortably below 5 A / 120 W.
  • Your AC input is single-phase in the 100–240 VAC range (approximately 85–264 VAC allowable).
  • Your panel has space for a 40 mm-wide DIN-rail module plus the ventilation clearances Omron specifies.
  • Your ambient operating temperature falls within -40 °C to +70 °C, with derating applied above rated threshold per datasheet curves.
  • Your application requires UL, CE, or equivalent industrial safety certifications.

If your load exceeds 120 W, your input is three-phase, or your panel demands redundancy switching, the S8VK-G12024 is not the right fit — consider higher-wattage S8VK-G variants (240 W or 480 W), the three-phase S8VK-T series, or pair the output with an S8VK-R redundancy module instead.

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What the Omron S8VK-G12024 Actually Does Inside a Control Panel

The S8VK-G12024 is a single-output AC/DC switch mode power supply from Omron's S8VK-G family, purpose-rated for continuous industrial duty. It converts single-phase mains — anywhere from 100 to 240 VAC — into a regulated 24 VDC output at up to 5 A, sustaining 120 W of continuous power without a cooling fan. The convection-cooled design eliminates the fan as a maintenance and failure point, which matters in 24/7 production environments where unplanned downtime is expensive.

The housing is 40 mm wide — a significant constraint in densely loaded panels — and mounts directly to a standard DIN-rail. The output voltage is adjustable within approximately 22.5–28.5 VDC, allowing the installer to compensate for cable voltage drop over long DC distribution runs. Internal protections include overload and overcurrent protection, short-circuit protection, and overvoltage protection. A DC OK LED on the front face gives immediate visual confirmation that the output is live and within spec — useful both during commissioning and during fault-finding without a multimeter.

The operating temperature range of -40 °C to +70 °C is one of the attributes that distinguishes this supply in harsher industrial environments. At higher ambient temperatures, Omron specifies derating curves that the installer must follow — ignoring them is one of the most common mistakes in field deployments of supplies in this class.

Typical System Architecture: Where This Supply Sits in the Signal Chain

The S8VK-G12024 sits between the AC mains distribution and the DC control bus, converting incoming single-phase AC power into the regulated 24 VDC that every downstream control device depends on. Its output feeds the low-voltage control network directly.

  • Single-phase AC mains (100–240 VAC) enter through an upstream circuit breaker or fuse — external protection that the installer must provide per manufacturer recommendations and local electrical codes.
  • The S8VK-G12024 converts this to 24 VDC, with the DC OK LED confirming healthy output before downstream devices are loaded.
  • A 24 VDC terminal block distribution rail distributes power to PLCs, remote I/O modules, safety relays, and contactors.
  • Sensors, proximity switches, HMIs, and low-voltage instrumentation draw from the same 24 VDC bus, with fused sub-circuits protecting individual field branches.
  • Where redundancy is required, an S8VK-R redundancy module sits between two parallel supplies and the DC bus — the S8VK-G12024 alone is not a redundant architecture.

Industries and Applications Where the S8VK-G12024 is Commonly Specified

Factory automation panels with a standard PLC, distributed I/O, and a modest sensor load are the core use case for the S8VK-G12024. The 120 W / 5 A rating comfortably covers a mid-range PLC CPU plus several I/O slices, a handful of safety relays, and a small HMI — the load profile that describes the majority of standalone machine control cabinets in packaging, material handling, and general manufacturing.

OEM machine builders specifying 24 VDC control power for equipment shipped to multiple countries benefit from the 100–240 VAC wide input range, which eliminates the need for multiple supply variants across global markets. The UL and CE approvals support deployment across North America, Europe, and other regions where these marks are required.

Maintenance and MRO teams replacing aging or failed 24 VDC supplies in existing panels frequently specify the S8VK-G12024 as a direct upgrade path — the DIN-rail footprint and standard terminal layout simplify swap-outs, and the operating temperature range down to -40 °C makes it viable in unheated equipment rooms or outdoor-rated enclosures.

Process control skids, HVAC control panels, and pump station automation are secondary applications where the same logic applies: a single-phase AC input, a 24 VDC control load under 5 A, and a need for industrial-grade reliability in a compact form factor.

Application Typical Deployment
Factory automation control cabinet 24 VDC rail for PLC CPU, I/O modules, safety relays, and proximity sensors
Packaging or material handling machine Single-supply 24 VDC bus for motion control I/O, HMI, and field devices on OEM panel
Food and beverage production equipment DIN-rail supply in stainless or Type 4X enclosure; wide temperature range supports wash-down area installations
Process control skid 24 VDC instrumentation power for transmitters, valve positioners, and controller I/O
MRO panel upgrade or replacement Direct DIN-rail swap for legacy 24 VDC supply with improved temperature tolerance
OEM machine shipped globally Wide 100–240 VAC input eliminates regional supply variants; UL and CE marks support multi-market approval

Purchase-Decision Specs at a Glance

Parameter Value
Model S8VK-G12024
Output voltage 24 VDC nominal (adjustable approx. 22.5–28.5 VDC)
Output current 5 A continuous at rated conditions
Output power 120 W
Input voltage range 100–240 VAC (approx. 85–264 VAC allowable), single-phase
Operating temperature -40 °C to +70 °C (with derating at higher ambient per datasheet curves)
Mounting DIN-rail, 40 mm wide housing
Dimensions (H x W x D) Approx. 125 x 40 x 122 mm
Cooling Convection only — no fan
Protections and indication Overload/overcurrent, short-circuit, overvoltage protection; DC OK LED

Full technical specifications are available on the product page at LeadTime.ca.

S8VK-G Family Variants: Choosing the Right Wattage and Series

The S8VK-G family spans multiple power ratings, from 15 W at the low end up to 480 W for large automation cabinets. The S8VK-G12024 at 120 W / 5 A sits in the mid-range, suited for standard PLC and I/O panels. Below is a comparison of the key variants and how the series alternatives relate to different application requirements.

Model / Series Output Power Output Voltage Input Type Best Fit
S8VK-G06024 60 W 24 VDC Single-phase AC Small I/O panels, sensor networks, compact cabinets with light loads
S8VK-G12024 120 W 24 VDC Single-phase AC Mid-sized PLC and I/O panels — the subject of this review
S8VK-G24024 240 W 24 VDC Single-phase AC Larger automation cabinets with multiple I/O racks, drives, and HMIs
S8VK-G48024 480 W 24 VDC Single-phase AC High-density panels with large distributed I/O, multiple controllers, or high inrush loads
S8VK-T series Various 24 VDC Three-phase AC Industrial panels with three-phase mains; not a single-phase substitute
S8VK-R redundancy module N/A (module only) 24 VDC DC bus input Adds redundancy when two S8VK-G supplies are paralleled via the module; required for true redundant architectures

If your load total — after applying temperature derating and inrush margin — approaches or exceeds 5 A, move directly to the 240 W variant. Do not run an S8VK-G12024 at the edge of its rating in a warm cabinet. Check current availability of the S8VK-G12024 and related S8VK-G models at LeadTime.ca.

Expert Verdict: Is the S8VK-G12024 the Right Supply for Your Project?

The Omron S8VK-G12024 earns its place as a default specification for 24 VDC control power in small to mid-sized industrial panels. It delivers a rated 5 A / 120 W from a wide 100–240 VAC input, survives operating temperatures down to -40 °C, and does all of this without a cooling fan — a meaningful reliability advantage in 24/7 duty cycles. The combination of compact 40 mm width, standard DIN-rail mounting, and global safety approvals makes it straightforward to integrate whether you are building a new panel from scratch or replacing an aging supply on an existing line. Controls engineers who are standardising on Omron for PLC and I/O will find it the natural choice to complete the control power picture.

Where the S8VK-G12024 reaches its limits is equally clear. If your 24 VDC load, after derating for ambient temperature and accounting for starting currents, exceeds what comfortably fits within 120 W, do not force this supply to work at its ceiling — size up to the S8VK-G24024 (240 W) or S8VK-G48024 (480 W) instead. Applications with three-phase mains require the S8VK-T series rather than the single-phase S8VK-G. And if your process cannot tolerate a single point of failure on the DC bus, a standalone S8VK-G12024 is not a redundant solution — it needs to be paired with a second supply and an S8VK-R redundancy module to achieve that architecture. Plants where another brand is mandated by a global procurement standard should follow that standard rather than introduce a new vendor.

From a procurement standpoint, the S8VK-G12024 is a well-established catalog item carried by specialist industrial automation distributors worldwide. That said, the single most important step before placing a purchase order is confirming current stock and lead time against your project schedule — automation supply chains can shift, and an item that is typically available from stock can occasionally be on extended lead time. Working through a specialist distributor rather than a generic procurement channel also gives you access to sizing validation and approval confirmation before the order ships, not after a wrong part arrives on site. View current pricing and availability for the Omron S8VK-G12024 at LeadTime.ca — we ship worldwide.

For volume pricing, project BOM support, or to confirm lead time before committing to a build schedule, contact the LeadTime.ca team directly — we ship worldwide.

What Engineers Need to Know Before Ordering the S8VK-G12024

Model-specific forum discussion for the Omron S8VK-G12024 is sparse across the communities where controls engineers typically share field experience — including r/PLC, r/automation, PLCTalk, PLCS.net, MrPLC, and the distributor Q&A sections searched for this review. This is not unusual for a well-established, reliable component: parts that work consistently in the field rarely generate dramatic forum threads. The general sentiment around Omron's S8VK family in these communities is cautiously positive, with users noting reliability in 24/7 industrial service and practical fit in crowded panels — but seldom calling out the S8VK-G12024 by catalog number specifically.

What the forum record does surface at the family level is worth carrying into an S8VK-G12024 specification. Engineers on industrial automation forums consistently warn about underestimating total DC load current, particularly when high-inrush devices such as contactors, solenoids, and drives are on the same 24 VDC bus. The margin between rated output and actual running load matters more than many panel designers initially assume, especially once temperature derating is applied in a cabinet that runs warm. A second recurring thread theme involves terminal wiring in dense panels: compact DIN-rail supplies in this class can have tightly spaced terminals, and verifying that the site's standard wire gauges and ferrule types are compatible before installation avoids rework.

When community data is thin, the right move is to engage a specialist distributor who handles these components daily. The LeadTime.ca team works with controls engineers on load sizing, approval confirmation, and stocking strategy across many applications — the kind of pre-order validation that prevents the most common wrong-part and undersizing errors. If your application is at all boundary-case for the 120 W / 5 A rating, that conversation is worth having before a purchase order is placed.

Wiring and Installation Overview

The following points cover the key requirements and verification steps for installing the S8VK-G12024. Engineers requiring complete wiring diagrams, tightening torques, and detailed commissioning procedures should refer to the Omron S8VK-G series installation manual and datasheet.

  • Mount the unit on a standard DIN-rail in the manufacturer-recommended orientation, leaving the clearances Omron specifies for convection cooling — inadequate spacing is the leading cause of thermal derating issues in service.
  • Connect AC input to the L, N, and protective earth (PE) terminals using wire size and tightening torque per the Omron datasheet; always install an external circuit breaker or fuse on the AC input side per manufacturer guidance and the applicable electrical code.
  • Connect the DC output from the +V and -V terminals to the panel's 24 VDC distribution rail, confirming correct polarity before energising; the output voltage trim is adjustable within approximately 22.5–28.5 VDC to compensate for cable drop.
  • After powering up, verify AC input presence, confirm the DC OK LED is illuminated, and measure the output voltage with a calibrated multimeter before connecting the full load.
  • If redundancy or parallel operation is required, use the appropriate S8VK-R redundancy module configuration as specified by Omron — do not simply parallel two S8VK-G12024 outputs without the correct module architecture.

Wrong-Part Prevention Checklist

Before placing an order for the Omron S8VK-G12024, work through each of the following checks. These are the most common points of specification error for DIN-rail power supplies in this class.

  1. Confirm load requires 24 VDC (not 12 VDC, 48 VDC, or other voltage).
  2. Sum total DC load current (continuous + inrush/peak) and verify it is comfortably below 5 A, with margin for future expansion and temperature derating.
  3. Confirm AC supply is single-phase 100–240 VAC and matches the S8VK-G12024 input range; for three-phase mains or DC input, validate compatibility or choose another model.
  4. Check physical panel space: height, depth, and 40 mm width, plus required ventilation clearances.
  5. Verify environmental conditions: ambient temperature, altitude, and enclosure type do not exceed manufacturer derating curves.
  6. Confirm needed approvals (UL, CE, industrial safety, and any industry-specific standards) are met for the target market.
  7. Check terminal type and wire size compatibility with the site's wiring standards.
  8. If redundancy or parallel operation is required, verify appropriate configuration (e.g., S8VK-R redundancy modules) rather than simple paralleled outputs.

If any item on this list raises a question about fit, contact the LeadTime.ca team before ordering — confirming the correct part upfront is always faster than a return and replacement mid-project.

Frequently Asked Questions

Can I parallel two S8VK-G12024 units to get more than 5 A, and what are the limitations?

Paralleling two S8VK-G12024 supplies without the appropriate S8VK-R redundancy module is not a straightforward current-doubling exercise — current sharing between two independently regulated outputs can be uneven, potentially overloading one unit. If your load exceeds 5 A, the correct approach is to step up to a higher-wattage S8VK-G model or, if redundancy is the goal, use two supplies with an S8VK-R redundancy module as specified by Omron.

How much can I adjust the output voltage on the S8VK-G12024, and when should I use that adjustment?

The output voltage on the S8VK-G12024 is adjustable within approximately 22.5–28.5 VDC using the trim potentiometer. Adjustment is typically used to compensate for voltage drop across long DC distribution runs, ensuring that the voltage at the far end of the 24 VDC bus remains within device operating tolerances. Avoid trimming the output higher than necessary, as this raises power dissipation in connected devices.

What external fuse or circuit breaker should I use on the AC input side?

The S8VK-G12024 requires external overcurrent protection on the AC input — the internal protections on the DC output do not substitute for upstream AC protection. Omron's installation documentation specifies the appropriate breaker or fuse ratings; always refer to the current Omron manual for the precise recommendation and confirm compliance with the applicable electrical code (NEC, CEC, IEC, or other) for the installation location.

At what ambient temperature does the S8VK-G12024 begin to derate, and how significant is the derating?

The S8VK-G12024 is rated for operation from -40 °C up to +70 °C, but the full 5 A / 120 W output is only available up to a defined ambient threshold — above that point, the allowable continuous output current must be reduced per the derating curves in the Omron datasheet. In warm or poorly ventilated cabinets, this derating can meaningfully reduce the usable output, so always check the datasheet curves against your worst-case panel temperature before finalising the supply selection.

Is the S8VK-G12024 approved for use in both Canadian and U.S. control panels?

The S8VK-G12024 carries industrial safety certifications including UL and CE marks — confirm the exact approval listing against your panel's required standards by reviewing the current Omron datasheet and, where needed, the applicable certification body's listing. For panels built to CSA or UL standards in Canada and the United States, verify that the specific certification marks on your unit match the requirements of the inspection authority having jurisdiction over the installation.

What happens if the S8VK-G12024 experiences a short circuit or severe overload on the DC output?

The S8VK-G12024 includes overload/overcurrent and short-circuit protection on the DC output. Under these conditions the supply limits or shuts down the output rather than sustaining damage — the DC OK LED will extinguish. Once the fault condition is cleared, the supply should recover; the exact restart behaviour (automatic restart versus manual intervention required) is specified in the Omron product documentation and should be confirmed before deploying in a system where automatic restart would be unsafe.

Why Order the Omron S8VK-G12024 from LeadTime.ca

  • LeadTime.ca ships the Omron S8VK-G12024 worldwide — no geographic restrictions on sourcing.
  • Specialist automation distributor focus means pre-order sizing and approval validation support is available, not just catalog fulfillment.
  • Volume pricing and project BOM support available for panel builders and OEMs placing multi-unit orders.
  • Transparent lead time communication — current stock and availability status confirmed before your order commits.

Omron S8VK-G12024 — At-a-Glance Summary

  • Rated output: 24 VDC at 5 A, 120 W continuous.
  • Input range: 100–240 VAC single-phase (approximately 85–264 VAC allowable).
  • Operating temperature: -40 °C to +70 °C with datasheet derating curves above rated ambient threshold.
  • Mounting: standard DIN-rail, 40 mm wide housing, approximately 125 x 40 x 122 mm.
  • Cooling: convection only, no fan — cabinet airflow clearances required.
  • Output voltage adjustable within approximately 22.5–28.5 VDC via trim potentiometer.
  • Protections: overload/overcurrent, short-circuit, and overvoltage; DC OK LED status indicator.
  • Certifications include UL and CE — confirm exact marks against project requirements from current datasheet.
  • Redundancy requires S8VK-R module; three-phase input requires S8VK-T series — S8VK-G12024 is single-phase only.
  • Correct sizing check: total 24 VDC load with inrush and derating margin must sit comfortably below 120 W / 5 A before specifying this model.

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